Zygomaticus major muscle
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Zygomatic major | ||
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Muscles of the head, face, and neck. | ||
Latin | Zygomaticus major | |
Origin: | anterior of zygomatic | |
Insertion: | modiolus of mouth | |
Blood: | facial artery | |
Nerve: | buccal branch of facial nerve | |
Action: | draws angle of mouth |
The Zygomatic major is a muscle of the human body. It is a muscle of facial expression which draws the angle of the mouth superiorly and posteriorly. Like all muscles of facial expression, the zygomatic major is innervated by the facial nerve (Cranial Nerve VII).
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The Zygomaticus extends from each zygomatic arch (cheekbone) to the corners of the mouth. It raises the corners of the mouth when a person smiles.